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Eco-photos of the week: Jan. 23-29

Jan. 28, 2011, 6:10 a.m.
The aurora borealis appears in the sky above a neighborhood of snow-covered houses in Tuktoyaktuk, Northwest Territories, Canada on Jan. 24.

Photo: savillent/Flickr

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Northern lights

The aurora borealis, also known as the northern lights, appears in the sky above a neighborhood of snow-covered houses in Tuktoyaktuk, Northwest Territories, Canada on Jan. 24.